5-11
5.7 APH board (EZJ135) replacement
１ Remove the head base rear cover.
２ Remove the APH board
fastening screws.
３ Slide approximately by 4 mm.
４ Pull out the APH board.
５ Remove the connectors
(4 locations).
７ Remove APH sensor and then replace
with new one.
● When you reassemble APH sensor, follow the
procedures below to maintain O-ring assembling reliability in APH sensor.
(1) Remove Gutter base.
(2) Fix APH sensors (2pieces) on EZJ135 board temporarily by the screws (4pieces).
(3) Fix EZJ135 board on head base, and then assemble O-rings (2pieces).
(4) Tighten the screws (4pieces) of step (2), and then assemble Gutter base.
７ Perform Excitation adjustment and Auto-phase gain adjustment on
Adjustment/operation checkout screen.
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